2nd century AD – Kingdom of Axum becomes a regional trading power. 4th century – Coptic Christianity introduced from Egypt. King Ezana’s Stele: One of the 1700-year old obelisks erected by the Kingdom of Axum Ethiopia unveils ancient obelisk 1530-31 – Muslim leader Ahmad Gran conquers much of Ethiopia. 1818-68 – Lij Kasa conquers…